The 95 largest Accounting companies in London (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	PwC UK pwc.co.uk Professional services firm focusing on building trust in society and solving important problems through partnership and commercial expertise.	Accounting	🇬🇧 London	10,873	n/a
2	ACCA accaglobal.com A global body for professional accountants, providing qualifications and support while promoting ethics, governance, and public interest in the profession	Accounting	🇬🇧 London	8,556	1904
3	Azets azets.com A leading professional services firm in Northern Europe, providing advisory, accounting, audit, HR, recruitment, outsourcing, and technology solutions to clients	Accounting	🇬🇧 London	7,523	n/a
4	BDO UK bdo.co.uk Provides tax, audit, assurance, accounting, business advisory, and outsourcing services to diverse sectors with a client-focused, innovative approach.	Accounting	🇬🇧 London	6,800	1903
5	Grant Thornton UK grantthornton.co.uk Providing assurance, tax, and advisory services through a global network, combining local insight with flexible, client-focused solutions.	Accounting	🇬🇧 London	5,972	1904
6	RSM UK rsmuk.com Professional services network providing expertise, resources, and client-focused solutions to empower businesses with confidence and deep understanding.	Accounting	🇬🇧 London	5,025	1988
7	Moore Global moore-global.com Global accounting and advisory firm with over 37,000 professionals in 114 countries, dedicated to helping clients thrive through expert guidance and support	Accounting	🇬🇧 London	3,884	1907
8	MHA mha.co.uk Offers financial and business strategy services to enterprises and individuals, supporting growth, success, and sustainable wealth creation globally.	Accounting	🇬🇧 London	3,439	1880
9	Sumer sumer.co.uk Championing small to medium UK and Ireland businesses by uniting expert firms to provide collaborative support and growth solutions.	Accounting	🇬🇧 London	2,608	n/a
10	Crowe UK crowe.com Providing audit, tax, advisory, and consulting services with deep market knowledge to businesses, nonprofits, pension funds, and private clients.	Accounting	🇬🇧 London	1,518	n/a
11	CIMA aicpa-cima.com Empowering highly skilled accountants to meet current demands and future challenges, driving a dynamic profession focused on trust, opportunity, and prosperity worldwide	Accounting	🇬🇧 London	1,512	1919
12	ICAEW icaew.com Trains, develops, and supports chartered accountants worldwide, sharing knowledge with governments and regulators to foster sustainable, accountable, and fair economies.	Accounting	🇬🇧 London	1,419	1880
13	Moore Kingston Smith mooreks.co.uk Providing multi-disciplinary advisory, tax, and audit services to diverse clients locally and internationally, fostering positive change and understanding.	Accounting	🇬🇧 London	1,358	n/a
14	Xeinadin xeinadin.com Providing expert business advice infused with technology and global expertise, Xeinadin Group empowers companies to reach their strategic objectives efficiently	Accounting	🇬🇧 London	1,323	2019
15	Saffery saffery.com A partner-led top 20 accountancy firm specializing in corporate finance, entrepreneurs, and international clients, committed to long-term relationships and tailored strategies	Accounting	🇬🇧 London	1,322	1855
16	AAT aat.org.uk Leading UK qualification & membership body for accounting staff, awarding 90% of accounting vocational qualifications, with 130,000+ global members Offering support, training, and networking opportunities worldwide	Accounting	🇬🇧 London	1,254	1980
17	No Comment europa-recht.eu An independent firm providing comprehensive accounting services to clients in various sectors, including taxation, audit, bookkeeping, and payroll processing with a personalized approach	Accounting	🇬🇧 London	1,191	1998
18	Menzies LLP menzies.co.uk Leading UK advisory and accountancy firm offering financial, operational, and strategic support to businesses and individuals internationally across various sectors	Accounting	🇬🇧 London	1,115	1912
19	PKF Global pkf.com Network of independent firms providing audit, accounting, tax, legal, and business advisory services across 150 countries worldwide.	Accounting	🇬🇧 London	877	1969
20	Nexia nexia.com Network of independent accounting and consulting firms providing audit, tax, advisory, and business services with global collaboration.	Accounting	🇬🇧 London	872	1991
21	Accountant Office media7.net A professional firm specializing in accounting services for businesses and individuals, providing expertise in financial management, tax preparation, and consulting	Accounting	🇬🇧 London	842	n/a
22	Blick Rothenberg blickrothenberg.com Leading tax, accounting and business advisory firm offering audit, accounting, business advisory, corporate and personal tax services built on integrity and expertise.	Accounting	🇬🇧 London	736	1945
23	Grant Thornton International Ltd grantthornton.global Global professional services firm providing assurance, tax, and advisory services with a personal, agile, and proactive approach in over 149 countries	Accounting	🇬🇧 London	727	n/a
24	PKF Littlejohn pkf-l.com A fast-growing firm of accountants and business advisers in London, Leeds, and Manchester, offering audit, tax, and advisory services with expertise in capital markets, insurance, international businesses, and charities	Accounting	🇬🇧 London	715	n/a
25	HaysMac haysmac.com Top 30 chartered accountants and tax advisors providing services to businesses, charities, and organizations, with international reach through MSI Global Alliance	Accounting	🇬🇧 London	702	2001
26	Kreston Reeves krestonreeves.com Providing personalized accountancy, business, and wealth advice with a focus on social responsibility, guiding clients and communities towards a brighter future	Accounting	🇬🇧 London	614	1821
27	UHY Hacker Young uhy-uk.com Award-winning UK chartered accountants with 24 offices across England, Wales, and Northern Ireland providing full service support for commercial and personal financial matters	Accounting	🇬🇧 London	611	1925
28	IFRS Foundation ifrs.org An independent organization overseeing standard-setting bodies for accounting and sustainability, ensuring the development and promulgation of global standards for financial reporting	Accounting	🇬🇧 London	592	2001
29	Buzzacott buzzacott.co.uk A top 25 UK accountancy firm based in London, providing tailored expertise for private clients, businesses, and not-for-profit organizations worldwide	Accounting	🇬🇧 London	591	1919
30	BKL bkl.co.uk BKL is a top firm of chartered accountants and tax advisers, known for expertise in tax matters and building relationships with ambitious clients	Accounting	🇬🇧 London	591	1980
31	Kreston Global kreston.com Accounting firms global network, offering compliance and advisory services, building partnerships based on trust, integrity, and collaboration worldwide.	Accounting	🇬🇧 London	570	1971
32	Financial Reporting Council frc.org.uk Support UK economic growth by upholding high standards in corporate governance, reporting, auditing, actuarial work, and regulatory oversight.	Accounting	🇬🇧 London	483	n/a
33	Mazars in the UK mazars.co.uk Professional services firm undergoing rebranding, updating LinkedIn presence to Forvis Mazars in the UK, focusing on client communication.	Accounting	🇬🇧 London	429	n/a
34	Financeplus (part of WPP)wpp.com FinancePlus provides financial shared services including accounts payable, receivable, treasury, and reporting to WPP companies globally for increased efficiency and effectiveness	Accounting	🇬🇧 London	416	2012
35	Gravita gravita.com Gravita provides innovative accounting solutions to assist fast-growing SMEs, listed companies, international businesses, and individuals with planning, growth, and financial services	Accounting	🇬🇧 London	396	n/a
36	mgr mgr.co.uk London-based accountancy business providing exceptional accounting, tax, and business advisory services to corporates, entrepreneurs, creatives, and private clients Member of ETL GLOBAL network	Accounting	🇬🇧 London	394	2013
37	Rawlinson & Hunter LLP rawlinson-hunter.co.uk Provision of taxation advisory, compliance, accountancy, and assurance services to individuals, families, entrepreneurs, and businesses globally.	Accounting	🇬🇧 London	387	1933
38	KBM Training & Recruitment kbmtr.co.uk Specialized in practical accountancy training, offering one-to-one sessions using real client files and various accounting software, preparing learners for various job roles in the industry	Accounting	🇬🇧 London	380	2004
39	CIPFA cipfa.org Professional body for public finance professionals with 14,000 members working in public services, audit agencies, accountancy firms, and other public money management bodies	Accounting	🇬🇧 London	360	1885
40	SKS Business Services raa-uk.com SKS offers tailored financial services to businesses of all sizes, specializing in finance function outsourcing to help clients build and preserve wealth effectively	Accounting	🇬🇧 London	348	2008
41	HW Fisher, part of the Sumer Group hwfisher.co.uk provides expert accountancy, tax, audit, corporate and financial advisory services to SMEs, corporates, charities, and high net-worth individuals	Accounting	🇬🇧 London	348	1933
42	DFK International dfk.com A Top 10 international association of independent accounting firms and business advisers, emphasizing client understanding, personal service, and ethical standards	Accounting	🇬🇧 London	298	1962
43	Russell Bedford International russellbedford.com A global network of independent firms providing accounting, auditing, tax advice, and business consulting services to clients worldwide since 1983	Accounting	🇬🇧 London	298	1983
44	KBM Chartered Certified Accountants & Registered Auditors kbmuk.co.uk An independent firm of Chartered Accountants offering accounting services, audits, and financial planning to companies across the UK	Accounting	🇬🇧 London	237	1987
45	UHY International uhy.com A leading network of independent audit, accounting, tax, and consulting firms with offices in 100 countries, part of the 20th largest international accounting network	Accounting	🇬🇧 London	232	1986
46	MGI Worldwide mgiworld.com Global network of independent audit, tax, and accounting firms with almost 9,000 professionals in 400 locations, providing personalized services to small and medium-sized businesses worldwide	Accounting	🇬🇧 London	207	1947
47	Sopher + Co sopherco.com Entrepreneurial accounting firm in London providing personalized services, expertise in tax, corporate finance, and business growth for individuals and businesses	Accounting	🇬🇧 London	204	1975
48	Lubbock Fine lubbockfine.co.uk An independent accounting, tax, audit, and business advisory firm in the heart of London, helping clients achieve financial success through innovative solutions and exceptional service	Accounting	🇬🇧 London	186	1929
49	Part-Time Accountants part-timeaccountants.co.uk Specializing in part-time recruitment solutions for finance professionals, offering interim directors, controllers, managers, advisors, and back-office services for growth-oriented companies in the UK and overseas	Accounting	🇬🇧 London	167	2010
50	Dixon Wilson dixonwilson.com Specialists in tax, accountancy, and advisory services for high net worth individuals, families, trusts, and businesses with international reach.	Accounting	🇬🇧 London	167	1888
51	EY Private Client Services ey.com Specializing in private client services, the company provides expert tax advice and support for individuals, families, and businesses with US/UK cross-border needs	Accounting	🇬🇧 London	166	2021
52	Oury Clark ouryclark.com This company offers integrated professional services by a team of experts, including accountants, lawyers, tax advisors, auditors, recruiters, and financial advisers	Accounting	🇬🇧 London	156	1935
53	International Accounting Standards Board (IASB)ifrs.org This company develops high-quality international financial reporting standards for general purpose financial statements, along with the International Sustainability Standards Board	Accounting	🇬🇧 London	153	2001
54	AGN International agn.org A global association of independent accounting firms offering assurance, tax, and advisory services, with a focus on high standards and client service	Accounting	🇬🇧 London	146	1996
55	Nyman Libson Paul nlpca.co.uk A seasoned firm offering audit, accountancy, and consultancy services to clients in arts, entertainment, media, and more, emphasizing personalized and cost-effective solutions	Accounting	🇬🇧 London	134	1933
56	Brebners brebners.com A chartered accountancy firm based in London and Sevenoaks, providing accountancy, tax, financial services, and specialist advice to businesses and individuals for over 80 years	Accounting	🇬🇧 London	122	1925
57	Wellers wellersaccountants.co.uk An experienced firm of accountants in the South East, helping entrepreneurs, owner managers, and individuals achieve their goals through quality advice, business growth, and wealth protection	Accounting	🇬🇧 London	121	1942
58	Xeinadin (previously Silver Levene)xeinadin.com An independent firm offering a full range of business consulting, accounting advice, tax services, and specialized financial management to clients in various industries	Accounting	🇬🇧 London	103	2019
59	Beavis Morgan LLP beavismorgan.com A group of businesses offering accounting, tax, advisory, and restructuring services with an innovative, flexible, and client-focused approach to business	Accounting	🇬🇧 London	103	2010
60	ECOVIS Wingrave Yeats ecovis.co.uk A leading firm in London providing accounting, audit, advisory, and tax services, with a global reach and emphasis on building enduring client relationships	Accounting	🇬🇧 London	101	1982
61	Wilder Coe wildercoe.co.uk A dynamic firm focused on maximizing wealth, minimizing risk, and supporting clients to achieve goals with personalized, high-quality service	Accounting	🇬🇧 London	76	1972
62	Lewis Golden LLP lewisgolden.com Established in 1950, the firm offers expert tax and accountancy services with a global perspective, focusing on building long-lasting relationships with clients	Accounting	🇬🇧 London	64	1950
63	Base Practice Support Ltd (Baseline Practice Support SMC-PVT Ltd)basepracticesupport.co.uk A UK-based company helps accountancy practices and companies increase profits, reduce costs, and grow their client base by providing accountancy support services	Accounting	🇬🇧 London	61	2015
64	Diacron Group diacrongroup.com Global financial services firm specializing in accounting, tax, and corporate services to assist clients with international expansion and compliance	Accounting	🇬🇧 London	61	1995
65	ACCA Careers jobs.accaglobal.com The company connects businesses with top finance professionals to meet their staffing needs and enhance their financial operations	Accounting	🇬🇧 London	60	1904
66	Tax Advisory Partnership taxadvisorypartnership.com A London-based organization offering UK and US tax advice and compliance services for private clients, businesses, and trusts, with a focus on international tax matters	Accounting	🇬🇧 London	58	2010
67	Wilson Wright wilsonwright.com A London-based accounting and business advisory firm offering audit, tax, and specialist tax services to clients worldwide with a focus on technical excellence and personalized service	Accounting	🇬🇧 London	53	1893
68	Vision Consulting visionconsulting.co.uk Boutique firm of chartered accountants and auditors, servicing diverse clients worldwide with expertise in real estate, legal, retail, manufacturing, technology, and more	Accounting	🇬🇧 London	49	2002
69	AGK Partners agkpartners.com The company provides cost-effective compliance services and innovative financial solutions for individuals, businesses, and organizations, ensuring optimal financial potential	Accounting	🇬🇧 London	44	n/a
70	TC Citroen Wells citroenwells.co.uk Established accountancy practice with over 60 years of experience, offering premium financial solutions through a committed team and unrivaled client service	Accounting	🇬🇧 London	42	1952
71	GMNI gmni.com Global network of professional accounting firms in 50+ countries providing expert services, collaboration, and local market knowledge for international business needs	Accounting	🇬🇧 London	41	1977
72	Q Accountants qaccountants.com Provider of accounting and tax solutions tailored for SMEs, helping them overcome financial challenges and focus on business growth	Accounting	🇬🇧 London	32	2015
73	My Office Accountant myofficeaccountant.co.uk A nationwide provider of accountancy, taxation services, and business advice, specializing in bookkeeping, payroll, tax returns, and financial planning for business growth	Accounting	🇬🇧 London	32	2000
74	Everfair Tax everfairtax.co.uk A tax advisory firm specializing in UK, US, and Expatriate tax services for individuals and companies, ensuring tax compliance and efficiency	Accounting	🇬🇧 London	30	2014
75	Sarwar and Co sarwarandco.co.uk Specialists in accountancy and business advice, serving SMEs, professional individuals, and non-profit organizations with exceptional service and tax assistance	Accounting	🇬🇧 London	29	2011
76	KNAV UK uk.knavcpa.com A global accounting and consulting firm founded in 1999, offering assurance, taxation, valuation, transfer pricing, and business advisory services in multiple countries	Accounting	🇬🇧 London	29	2000
77	Wilson Stevens Limited wilsonstevens.co.uk An accounting firm based in London, specializing in providing financial services and guidance to clients in the United Kingdom	Accounting	🇬🇧 London	26	1987
78	M Zaidi & Co. Chartered Accountants and Registered Auditors zaidiandco.co.uk A firm of Chartered Accountants and Registered Auditors based in London and Dubai, serving clients for nearly 40 years	Accounting	🇬🇧 London	24	1974
79	RK Accountants Ltd rkaccountants.com The company offers accounting and taxation services tailored for small businesses, providing a wide range of comprehensive solutions to meet their needs	Accounting	🇬🇧 London	24	n/a
80	Alton & Co.alton.co.uk A firm of chartered accountants and auditors offering a wide range of professional services, focusing on ensuring client success and providing practical advice	Accounting	🇬🇧 London	23	1983
81	Vertice Services verticeservices.com Professional accountancy and business advisory firm in London offering trusted financial and business advice to businesses and private clients, tailored to individual needs	Accounting	🇬🇧 London	21	2006
82	JR Accounts - Chartered Certified Accountants jraccounts.co.uk A well-established firm offering tailored accountancy services for individuals and businesses, specializing in client satisfaction and helping clients reach financial goals	Accounting	🇬🇧 London	21	1998
83	Freemans Partnership LLP An accounting firm in London, UK, specializing in financial services and expertise to support businesses with their accounting needs	Accounting	🇬🇧 London	21	n/a
84	Thornton Springer thorntonspringer.co.uk A firm of chartered accountants and business advisers in South East London, providing tailored solutions for companies of all sizes	Accounting	🇬🇧 London	20	n/a
85	Anstey Bond LLP ansteybond.com A London-based accountancy and business advisory firm offering services such as accounting, taxation, payroll, audit, and corporate finance to meet specific business needs	Accounting	🇬🇧 London	17	2001
86	Sloane & Co LLP sloane.co.uk Proactive accountants helping clients turn the preparation of their accounts into a beneficial process, offering dedicated services from a senior partner	Accounting	🇬🇧 London	17	1974
87	UAN Chartered Certified Accountants uanuk.com A team of experienced accountants offer outsourced accounting, tax, and compliance services for SME businesses, providing practical advice for growth and financial success	Accounting	🇬🇧 London	13	2015
88	Ratnam & Co ratnamaccountants.co.uk Offering accounting, financial planning, and asset management services for businesses and individuals in London and the UK, specializing in small to medium-sized companies	Accounting	🇬🇧 London	11	n/a
89	AEL Markhams Ltd aelmarkhams.co.uk Providing comprehensive business advice since 1982 with a focus on creating, developing, retaining, and exiting businesses while offering personalized service	Accounting	🇬🇧 London	9	1982
90	Perlin Franco perlinfranco.co.uk Independent accountancy practice in North London, offering a range of accountancy, tax, and business development services with over 30 years of experience	Accounting	🇬🇧 London	9	1979
91	Taxwell Accounting Ltd Accounting firm in London, UK specializing in tax services and financial advice for individuals and businesses	Accounting	🇬🇧 London	9	n/a
92	Alan Heywood & Company LLP - Part of BKL bkl.co.uk Providing personalized financial services and advice to businesses of all sizes, including specialized support for music and entertainment clients, for over 30 years	Accounting	🇬🇧 London	8	1986
93	Add Accounting add-accounting.co.uk A firm dedicated to understanding clients' needs, providing solutions, and turning advice into action through partnership and expert advice delivery	Accounting	🇬🇧 London	7	n/a
94	Sinclairs Bartrum Lerner bartrum-lerner.co.uk An established firm of chartered accountants and business advisors in London's West End, specializing in assisting individuals and businesses at various growth stages	Accounting	🇬🇧 London	3	n/a
95	Capstone Global Limited capstonegl.com Global network of member firms providing accounting, consulting, corporate services, and financial advisory to clients worldwide for informed decision-making and sustainable growth	Accounting	🇬🇧 London	1	2016

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 9, 2026.

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Accounting companies in the United Kingdom 305